This is not a bad course at all. The all round basics of finance are covered. This is a basic course, it covers the basics well. For higher level stuff the mathematics becomes more complicated. For example if you wanted a course in quant finance you would need to understand measure theory, probability theory, stochastic calculus and computer science. You cannot learn this simply by learning examples. No MOOC will turn you into the finished product, you will have to eventually burn the midnight oil and read dozens of books.
Quant finance is hard, if you think its easy you are not studying hard enough.